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1.The risorius and the buccinator muscles assist in the retraction of the lips, as well as support entrapment of air within the oral cavity.

1.帮助唇收缩,支撑了整个口腔流通。

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双语版 TED-Ed 演讲精选

1.Others may be less so, like the buccinator, a muscle that attaches your cheek to your teeth, or the body's tiniest skeletal muscle, a one-millimeter-long tissue fragment called the stapedius that's nestled deep inside the ear.

其他肌肉我们就比较陌生了,比如把你脸颊牙齿上肌肉,还有身体上最纤细骨骼肌,毫米长组织材料,叫做镫骨肌,位于我们耳朵深处。

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